New game! I made it for Ludum Dare 28, though I ended up finishing five days late. The theme was "you only get one." The whole game is basically just an extended boss fight, and it takes less then five minutes to play through if you don't die. It is designed to take several attempts though, and if it's too hard or too easy you can adjust your starting health in the options menu. The music is Bach's Little Fugue in G Minor.
Download "Into the Vortex" here.